JP5456811B2 - Sewer stop valve device, auxiliary work system for sewer pipe facility, and work method for sewer pipe facility - Google Patents

Description

  In the present invention, when performing work such as inspection, cleaning, repair, and replacement of a sewage pipe facility in which sewage pipes are connected between a plurality of manholes, the opening of the sewage pipe is temporarily blocked to allow water to enter the work site. The present invention relates to a stop cock device for a sewage pipe, a work auxiliary system for a sewage pipe facility using the same, and a work method for the sewage pipe facility.

  In general, as shown in FIG. 10, the sewage pipe facility has a plurality of manholes M provided at a required interval and an upstream opening Ga that is connected between the adjacent manholes M and opens to the upstream manhole M. And a sewage pipe G having a downstream opening Gb that opens to a downstream manhole and through which water flows. In such a sewage pipe facility, the manhole M and the sewage pipe G are inspected and cleaned, and if there is damage such as cracks or corrosion, repair or replacement work is performed. When working on such a sewage pipe facility, an auxiliary work system for the sewage pipe facility that prevents water from flowing from the sewage pipe G into the work place is used as necessary.

Conventionally, for example, a technique described in Japanese Patent Laid-Open No. 9-236192 (Patent Document 1) is known as an auxiliary system for work in this type of sewage pipe facility.
As shown in FIG. 10, the auxiliary work system Sa for the sewer pipe facility has one manhole M as a starting point manhole M (X), and one other manhole M on the downstream side from the starting point manhole M (X). Is set as an end manhole M (Y), a work section is set between the start point manhole M (X) and the end point manhole M (Y), and the upstream sewer pipe G (X connected to the start point manhole M (X) ) Is provided in the downstream opening Gb, and the water flowing into this work section is controlled.
As shown in FIG. 10, a stop cock device 100 used in this auxiliary work system Sa is conventionally inserted into the opening Gb of the sewer pipe G to expand the diameter and fit into the opening Gb and reduce the diameter. The water-stop main body 101 that is released by fitting and the through-tube 102 that passes through the water-stop main body 101 and discharges the water in the sewer pipe G to the start point manhole M (X) side are configured. . The water-stop main body 101 includes, for example, a bag body 103 that expands and expands by air injection, fits into the opening Gb of the sewer pipe G, and contracts by air exhaust to release the fit. .
Further, in this work auxiliary system Sa, an electric pump 110 including a gear pump and a vane pump driven electrically is installed on the ground, and an outlet of the through pipe 102 of the water stop cock device 100 and an inlet of the electric pump 110 are connected. Connected by a suction pipe 111 passing through the opening of the start point manhole M (X), a discharge pipe 112 is connected to the discharge port of the pump 110, and the outlet end of the discharge pipe 112 is a sewage pipe downstream of the end point manhole M (Y). It arrange | positions so that water may flow into G (Y).

For example, when the sewage pipe G between the start point manhole M (X) and the downstream end point manhole M (Y) is damaged and repairing or exchanging it, first, the start point manhole M A water stopper device 100 is inserted into the downstream opening Gb of the upstream sewage pipe G (X) connected to (X), and air is supplied to the water stopper device 100 by the compressor 113 to form a bag body. The water stop main body 101 is fitted into the opening Gb of the sewer pipe G by injecting into 103 and expanding the diameter. Then, the suction pipe 111 is connected to the through pipe 102, the suction pipe 111 is connected to the electric pump 110, and the discharge pipe 112 is connected to the electric pump 110. The outlet end of the discharge pipe 112 is connected to the end point manhole M (Y). It arrange | positions in the sewer pipe G (Y) more downstream.
In this state, when the electric pump 110 is operated, the upstream sewage pipe G (X) is stopped by the stop cock 100, so that the water flowing to the upstream sewage pipe G (X) The air is sucked at 110 and discharged to the sewage pipe G (Y) downstream from the end point manhole M (Y). Thereby, since water does not flow into the work section, the damaged sewer pipe G in the work section can be replaced without being affected by water.

In the work such as repair, the work may take several days. In this case, a work interruption period is provided at night or the like. During this interruption, the electric pump 110 is always operated. Alternatively, if there is a problem of noise or if the electric pump 110 becomes unattended and malfunctions, there is a problem that water overflows upstream. If this is a concern, stop the electric pump 110 and work. The person removes the suction pipe 111 from the outlet 102a of the through-pipe 102 of the water stop cock device 100, attaches another pipe (not shown), and connects the outlet end of this pipe to the starting point manhole M (X). The downstream sewage pipe G (the sewage pipe G related to work such as repair) is disposed on the downstream opening Gb side of the downstream sewage pipe G through the upstream opening Ga, or the downstream sewage pipe It arrange | positions further downstream from the downstream opening part Gb of G, and it is also made to flow water to the sewer pipe G (Y) downstream from the end point manhole M (X). When resuming the work, another pipe and the suction pipe 111 are exchanged.
When the work such as repair is completed, the electric pump 110 is stopped, the air is removed from the bag body 103 of the water stop cock device 100, the water stop main body 101 is reduced in diameter, and the fitting to the opening Gb is released. Remove.

Japanese Patent Laid-Open No. 9-236192

By the way, in the work auxiliary system Sa of the conventional sewer pipe facility, the electric pump 110 is stopped during the work interruption period, and the suction pipe 111 is removed from the outlet of the through pipe 102 of the water stop cock device 100. Another pipe (not shown) is attached, and water is allowed to flow to the sewage pipe G (Y) downstream from the end point manhole M (Y). At this time, when the suction pipe 111 is removed, Since water spouts from the outlet 102a of the through pipe 102, there is a problem that it is difficult to replace the pipe and the workability is poor. Further, when the work is resumed, the same problem occurs when the pipe is replaced with another suction pipe 111.
Further, when the stop cock device 100 is taken out after repair work or the like, when the water stop main body 101 is reduced in diameter and the fitting to the opening Gb is released, the accumulated water on the upstream side is all the downstream. There is also a problem that it is not preferable for safety because it may flow to the side. In this case, before removing the water faucet device 100, first, only the suction pipe 111 is removed from the through pipe 102 and water is allowed to flow from the through pipe 102 to lower the upstream water level. In this case, too, when the suction pipe 111 is removed, water is spouted from the outlet 102a of the through-pipe 102, which may adversely affect workers. It was.

In addition, since the electric pump 110 is a conventional electric pump, there is a risk of electric leakage, and since it is composed of a gear pump and a vane pump, there is a problem that inhalation failure may occur due to the influence of air mixed in the inhaled water. is there. In this case, in particular, when unmanned, there is a problem that water overflows upstream.
In the case of manned, the return work of the electric pump 110 may be performed immediately, but for this return, so-called priming water is injected from the electric pump 110 side to fill the suction pipe 111 with water and the electric pump 110 is started. In this case, there is a problem that the work becomes complicated.

The present invention has been made in view of the above problems, and when the pump is stopped, the water in the sewage pipe from the stopcock device attached to the opening of the sewage pipe is prevented from affecting the worker on the downstream side. It is an object of the present invention to provide a sewage stop valve device, a work auxiliary system for a sewage pipe facility, and a work method for the sewage pipe facility so as to improve the workability.
In addition, in the work auxiliary system of the sewer pipe facility and the work method of the sewer pipe facility, the concern of electric leakage is wiped out as necessary, and the occurrence of poor suction due to the air sucked by the pump is suppressed and stable operation is performed. It was also an issue to be able to perform.

  In order to achieve such an object, a water faucet device for a sewer pipe according to the present invention is provided in a sewer pipe having an opening opening in a manhole and into which water flows, and is inserted and expanded from the opening of the sewer pipe. A water stop main body that has a diameter and is fitted to the sewer pipe and is reduced in diameter to be released, and a main pipe that passes through the water stop main body and discharges water in the sewer pipe to the manhole side. In the water cock stop cock device, a sub pipe is provided on the outlet side of the main pipe to branch out from the main pipe and lead out the water in the sewer pipe, and the sub pipe is opened and closed to open and close the sub pipe. The valve is provided.

  Thus, for example, when performing inspection, cleaning work, repair, replacement, etc. on the manhole or the sewage pipe downstream from the manhole, the opening of the upstream sewage pipe connected to the manhole This water stop device is inserted, and the water stop body is expanded and fitted. Then, the pump installed on the ground and the outlet of the main pipe are connected through a manhole with a suction pipe, and the open / close valve of the sub pipe is closed. When the pump is driven in this state, the water flowing to the upstream sewage pipe is sucked and discharged by the pump, and the water does not flow to the downstream sewage pipe. Can do.

  In such repair work, the work may take several days. In that case, a work interruption period is provided at night, etc. In this case, the operator stops the pump and stops the work. For example, another pipe is connected to the sub pipe of the water stop cock device, and the outlet end of the other pipe is arranged downstream of the portion related to the operation through the sewer pipe downstream of the manhole, and the sub pipe The secondary pipe opening / closing valve is opened so that water flows downstream from the part related to this operation. Thereby, even if a pump is stopped, the water of the sewer pipe provided with the water stop cock device can be flowed to the downstream side without affecting the work site. Therefore, compared with the case where the pump is always operated, there is no problem of noise, and there is no situation where water overflows upstream due to a failure of the pump, and the operation can be safely interrupted.

And since this interruption work is an operation of opening the secondary pipe opening / closing valve of the secondary pipe, water is not spouted from the water faucet device and is not sprinkled on the worker as in the prior art. It becomes easy and workability | operativity is improved.
When the operation is resumed, the sub pipe opening / closing valve of the sub pipe is closed, another pipe is removed, and then the pump is driven. Also in this case, since the operation of closing the sub pipe opening / closing valve of the sub pipe is performed, water is not spouted from the water stop cock device and is not sprinkled on the worker as in the prior art, so the work becomes extremely easy to perform, Workability is improved.

  When the work such as repair is completed, stop the pump and remove the stop cock device. In this case, first, another pipe is connected to the sub pipe of the stop cock device, and the outlet end of this other pipe is arranged in the sewer pipe downstream from the manhole, or another pipe depending on conditions. Open the secondary pipe open / close valve of the secondary pipe without connecting the. Thereby, the water of the sewer pipe provided with the water stop cock device can be flowed to the downstream side, and the water level can be lowered. Next, the water stop main body of the water stop cock device is reduced in diameter to release the fitting of the opening, and the water stop cock device is removed from the sewer pipe. In this case, since the water faucet device is removed after the water level of the sewer pipe is lowered, the accumulated upstream water does not flow to the downstream side at the same time, so that the safety of workers is ensured. In addition, since the water level of the sewage pipe is lowered by opening the sub pipe opening / closing valve of the sub pipe, water does not spout from the water stop device and is not sprinkled on the worker as in the past, so that work is extremely difficult. It becomes easy and workability | operativity is improved.

  If necessary, a main pipe opening / closing valve for opening and closing the main pipe is provided on the outlet side of the branch point of the sub pipe of the main pipe. As a result, as shown in FIG. 6, main pipe closing-sub pipe closing (S1), main pipe opening-sub pipe closing (S2), main pipe closing-sub pipe opening (S3), main pipe opening-sub pipe opening (S4). There are four possible settings. Therefore, the main pipe close-sub pipe close (S1) can be taken, so that, for example, it is possible to cope with the case where only the sewer pipe is stopped without discharging water. Further, by setting the main pipe open-sub pipe close (S2), water can be discharged out of the manhole by driving the pump. Further, by setting the main pipe closing-sub pipe opening (S3) or the main pipe opening-sub pipe opening (S4), the pump can be stopped and water can escape through the sub pipe downstream as described above.

  Further, if necessary, the main pipe includes a first main pipe on the water stop main body side and a second main pipe detachably connected to the first main pipe, and the sub pipe is connected to the second main pipe. It is set as the structure which provided. As a result, the second main pipe provided with the sub pipe is attached to the first main pipe. Therefore, if the through pipe of the conventional existing water stop cock device is used as the first main pipe, the existing water stop cock device is used in the present invention. Such a stop cock device can be easily modified, and therefore versatility can be increased. In addition, since an extension pipe can be provided between the first main pipe and the second main pipe, the length of the main pipe can be easily changed, so that the water faucet device can be used according to the installation conditions, In this respect, versatility can be increased.

In order to achieve the above object, an auxiliary work system for a sewage pipe facility according to the present invention includes a plurality of manholes provided at a predetermined interval and an upstream connected to each adjacent manhole and opened to an upstream manhole. When working on a sewage pipe facility having a side opening and a downstream opening that opens to a downstream manhole and having a sewage pipe through which water flows, one manhole is used as a starting manhole, and the starting manhole The other manhole on the downstream side is set as the end point manhole, and the section between the start point manhole and end point manhole is set as the work section, on the downstream opening side of the upstream sewer pipe connected to the start point manhole. In the auxiliary work system for the sewer pipe facility, which is provided with a stop cock and controls the water flowing into the work section,
The water stop device is inserted through the opening of the sewer pipe and expanded in diameter and fitted to the opening, and the water stop main body whose diameter is reduced and the fitting is released, and the water stop main body is penetrated. A main pipe for discharging the water in the sewage pipe to the starting manhole side, and a sub pipe branched from the main pipe on the outlet side of the main pipe for deriving the water in the sewage pipe. A pipe is provided with a secondary pipe opening / closing valve that opens and closes the secondary pipe,
A pump having a suction port and a discharge port and a drive source for driving the pump are installed on the ground, and the outlet of the main pipe of the water stop device and the suction port of the pump are connected by a suction pipe passing through the opening of the start point manhole. The discharge pipe is connected to the discharge port of the pump, and the outlet end of the discharge pipe is arranged so that water flows into the sewer pipe on the downstream side of the end point manhole.

  As a result, in the set work section, for example, when performing inspection, cleaning work, repair, replacement, etc. for manholes and sewer pipes, the upstream sewer pipes connected to the start point manholes A water stopcock device is inserted from the opening, and the diameter of the waterstop main body is expanded and fitted to the opening. Then, the pump installed on the ground and the outlet of the main pipe are connected by a suction pipe through a manhole, the open / close valve of the sub pipe is closed, and the pump is driven. In this case, the water flowing in the upstream sewage pipe connected to the starting point manhole is sucked by the pump through the suction pipe, discharged through the discharge pipe, and then flows to the sewage pipe downstream from the end point manhole. Therefore, since water does not flow in the work section, work can be performed without being affected by water.

  In such repair work, the work may take several days. In that case, a work interruption period is provided at night, etc. In this case, the operator stops the pump and stops the work. For example, another pipe is connected to the sub pipe of the water stop cock device, and the outlet end of the other pipe is arranged downstream of the part related to the operation through the sewer pipe downstream of the starting point manhole, and the sub pipe The secondary pipe opening / closing valve is opened, and water is allowed to flow downstream from the part related to this operation. Thereby, even if a pump is stopped, the water of the sewer pipe provided with the water stop cock device can be flowed to the downstream side without affecting the work site. Therefore, compared with the case where the pump is always operated, there is no problem of noise, and there is no situation where water overflows upstream due to a failure of the pump, and the operation can be safely interrupted.

And since this interruption work is an operation of opening the secondary pipe opening / closing valve of the secondary pipe, water is not spouted from the water faucet device and is not sprinkled on the worker as in the prior art. It becomes easy and workability | operativity is improved.
When the operation is resumed, the sub pipe opening / closing valve of the sub pipe is closed, another pipe is removed, and then the pump is driven. Also in this case, since the operation of closing the sub pipe opening / closing valve of the sub pipe is performed, water is not spouted from the water stop cock device and is not sprinkled on the worker as in the prior art, so the work becomes extremely easy to perform, Workability is improved.

  When the work such as repair is completed, stop the pump and remove the stop cock device. In this case, first, another pipe is connected to the sub pipe of the water stop cock device, and the outlet end of this other pipe is arranged in the sewage pipe on the downstream side of the starting point manhole. Open the secondary pipe open / close valve of the secondary pipe without connecting the pipe. Thereby, the water of the sewer pipe provided with the water stop cock device can be flowed to the downstream side, and the water level can be lowered. Next, the water stop main body of the water stop cock device is reduced in diameter to release the fitting of the opening, and the water stop cock device is removed from the sewer pipe. In this case, since the water faucet device is removed after the water level of the sewer pipe is lowered, the accumulated upstream water does not flow to the downstream side at the same time, so that the safety of workers is ensured. In addition, since the water level of the sewage pipe is lowered by opening the sub pipe opening / closing valve of the sub pipe, water does not spout from the water stop device and is not sprinkled on the worker as in the past, so that work is extremely difficult. It becomes easy and workability | operativity is improved.

  And as needed, in the said water stop cock apparatus, it is set as the structure which provided the main pipe opening / closing valve which opens and closes this main pipe in the exit side rather than the branch point of the said sub pipe of the said main pipe. As a result, as shown in FIG. 6, main pipe closing-sub pipe closing (S1), main pipe opening-sub pipe closing (S2), main pipe closing-sub pipe opening (S3), main pipe opening-sub pipe opening (S4). There are four possible settings. Therefore, the main pipe close-sub pipe close (S1) can be taken, so that, for example, it is possible to cope with the case where only the sewer pipe is stopped without discharging water. Further, by setting the main pipe open-sub pipe close (S2), water can be discharged out of the manhole by driving the pump. Further, by setting the main pipe closing-sub pipe opening (S3) or the main pipe opening-sub pipe opening (S4), the pump can be stopped and water can escape through the sub pipe downstream as described above.

  Further, if necessary, the main pipe includes a first main pipe on the water stop main body side and a second main pipe detachably connected to the first main pipe, and the sub pipe is connected to the second main pipe. It is set as the structure which provided. As a result, the second main pipe provided with the sub pipe is attached to the first main pipe. Therefore, if the through pipe of the conventional existing water stop cock device is used as the first main pipe, the existing water stop cock device is used in the present invention. Such a stop cock device can be easily modified, and therefore versatility can be increased. In addition, since an extension pipe can be provided between the first main pipe and the second main pipe, the length of the main pipe can be easily changed, so that the water faucet device can be used according to the installation conditions, In this respect, versatility can be increased.

  Further, if necessary, the pump is constituted by a diaphragm pump operated by compressed air, and the drive source is constituted by a compressor which is driven by liquid fuel and supplies compressed air to the diaphragm pump. Thereby, since it is a diaphragm pump, compared with a gear pump or a vane pump, it is possible to suppress a situation in which a suction failure occurs due to the influence of air mixed in the sucked water, and a stable operation can be performed. Therefore, the situation where the pump stops and water overflows upstream can be suppressed. In addition, since it is a diaphragm pump, there is no need to inject so-called priming water from the pump side and fill the suction pipe with water to start the pump, and the work becomes complicated. Can be prevented. Furthermore, since water can be sucked and discharged without using electricity, the fear of leakage can be eliminated, and safety can be improved.

  Furthermore, if necessary, it is a work auxiliary system for a sewage pipe facility in which a plurality of upstream sewage pipes are connected to the start point manhole, respectively, on the downstream opening side of each of the plurality of sewage pipes, The stop cock device is provided, and one of the stop cock devices is a main stop cock device, and the other is a sub stop cock device. A main pipe and the pump are connected, a connection pipe is provided on the outlet side of the main pipe of the main water stop device to connect the outlet of the main pipe of the sub water stop valve, and a plurality of upstream sides connected to the start point manhole are provided. It is configured such that the drainage of the sewer pipe can be performed with a single pump.

As a result, when the pump is driven, the sub pipe opening and closing valves of the main water faucet device and the sub water faucet device are closed, and the main pipe of the main water faucet device and the sub water faucet device are opened. To suck the water in the sewage pipe upstream from the start point manhole, and flow the water into the sewage pipe downstream from the end point manhole. In this case, a plurality of upstream sewage pipes are connected to the starting point manhole, and even if a plurality of stopcock devices are used, water can be sucked and discharged with a single pump. Simplification and labor saving can be achieved.
Further, when the pump is stopped, for example, the outlet pipe is connected to the outlet of the sub pipe of the main water faucet device, and the outlet end of the outlet pipe is connected through the upstream opening of the downstream sewer pipe connected to the starting point manhole. It is arranged on the downstream opening side of the downstream sewage pipe, or is further arranged on the downstream side beyond the downstream opening of the downstream sewage pipe. Open the secondary pipe opening / closing valve of the secondary pipe of the main water faucet device with the closed, consolidating the water in the multiple upstream sewage pipes connected to the start point manhole into the secondary pipe of the main water faucet device. Then, let water flow into the sewage pipe downstream from the final manhole. Therefore, the system can be simplified and the water discharge efficiency can be improved. Other actions and effects are the same as described above.

  And in order to achieve the above-mentioned object, the working method of the sewer pipe facility of the present invention is the above-described working method of the sewer pipe facility that performs the work of the sewer pipe facility using the work auxiliary system of the sewer pipe facility. At the time of driving the pump, the sub pipe opening / closing valve of the sub pipe of the stop cock device is closed, the main pipe of the stop cock device is opened, and water in the drain pipe upstream from the start point manhole is sucked by the pump, Water flows into the sewage pipe downstream from the end point manhole, and when the pump is stopped, the outlet pipe is connected to the outlet of the sub pipe, and the outlet end of the outlet pipe is connected to the lower end of the downstream side connected to the start point manhole. Arranged on the downstream opening side of the downstream sewage pipe through the upstream opening of the water pipe, or further on the downstream side beyond the downstream opening of the downstream sewage pipe, Open the secondary pipe opening / closing valve and It has a configuration to flow the water to the sewer downstream of the end point manhole. Has the same effects and effects as above.

Further, in order to achieve the above object, the working method of the sewer pipe facility according to the present invention is a sewer pipe facility in which a plurality of upstream sewer pipes are connected to the start point manhole described above, and the main stop cock device and the sub stop pipe In the work method of the sewer pipe facility that performs the work of the sewer pipe facility using the auxiliary work system of the sewer pipe facility equipped with the faucet device,
When the pump is driven, the sub pipe open / close valves of the sub pipes of the main water stop device and the sub water stop device are closed, and the main pipes of the main water stop device and the sub water stop device are opened. Inhales the water in the sewage pipe upstream from the start point manhole, and flows the water into the sewage pipe downstream from the end point manhole.
When the pump is stopped, the outlet pipe is connected to the outlet of the sub pipe of the main water faucet device, and the outlet end of the outlet pipe passes through the upstream side opening of the downstream sewer pipe connected to the starting point manhole. It is arranged on the downstream opening side of the downstream sewage pipe, or is further arranged on the downstream side beyond the downstream opening of the downstream sewage pipe. With the open / close valve closed, the secondary pipe open / close valve of the secondary pipe of the main water stop cock device is opened, and the water in the plurality of upstream sewer pipes connected to the start point manhole is supplied to It is configured such that water is fed to a sewer pipe downstream from the end point manhole by concentrating on a pipe. Has the same effects and effects as above.

  According to the present invention, the operation of the opening / closing valve of the sub pipe causes the water in the sewer pipe to be discharged from the stop cock device attached to the opening side of the sewer pipe when the pump is stopped as well as when the pump is driven. As a result, it is possible to flow downstream so as not to affect the operation, and workability can be improved. Further, in the work auxiliary system for the sewer pipe facility and the work method for the sewer pipe facility of the present invention, the pump is constituted by a diaphragm pump operated by compressed air, and the drive source is driven by liquid fuel and compressed to the diaphragm pump. When it is configured with a compressor that supplies air, it is possible to eliminate the fear of electric leakage, suppress the occurrence of poor suction due to the air sucked by the pump, and perform stable operation. There is an effect.

It is a figure which shows the auxiliary system for work of the sewer pipe facility which concerns on embodiment of this invention in the drive state of a pump. It is a figure which shows the auxiliary system for work of the sewer pipe facility which concerns on embodiment of this invention in the stop state of a pump. It is a figure which shows the water faucet device which concerns on embodiment used for this in the auxiliary system for work of the sewer pipe facility which concerns on embodiment of this invention with the attachment state. It is a figure which shows the water stop cock device which concerns on embodiment used for this in the auxiliary work system of the sewer pipe facility which concerns on embodiment of this invention. It is a perspective view which shows the basic structure of the adapter and coupler which are used for the water tap apparatus which concerns on embodiment of this invention. It is a table | surface figure which shows the combination of opening and closing of the main pipe | tube opening / closing valve and sub pipe | tube opening / closing valve of the water tap apparatus which concerns on embodiment of this invention. It is a figure which shows the principle of the diaphragm pump used for this in the auxiliary work system of the sewer pipe facility which concerns on embodiment of this invention. It is a figure which shows the modification of the auxiliary system for work | work of the sewer pipe facility which concerns on embodiment of this invention. It is a figure which shows another modification of the auxiliary system for work | work of the sewer pipe facility which concerns on embodiment of this invention. It is a figure which shows an example of the auxiliary system for work of the conventional sewer pipe facility.

  Hereinafter, based on the attached drawings, a water faucet device for a sewer pipe, an auxiliary work system for a sewer pipe facility, and a work method for the sewer pipe facility according to an embodiment of the present invention will be described. The water stop device for the sewer pipe is used in an auxiliary work system for the sewer pipe facility, and the work method for the sewer pipe facility is realized by the auxiliary work system. This will be described in the system. In addition, the same code | symbol is attached | subjected and demonstrated to the same thing as the above.

As shown in FIGS. 1 and 2, the sewage pipe equipment to which the auxiliary working system S according to the embodiment is applied is a plurality of manholes M provided at a required interval and between the lower ends of the adjacent manholes M. And a sewage pipe G that has an upstream opening Ga that opens to the upstream manhole M and a downstream opening Gb that opens to the downstream manhole M and through which water flows.
In such a sewage pipe facility, the manhole M and the sewage pipe G are inspected and cleaned, and if there is damage such as cracks or corrosion, repair or replacement work is performed. The auxiliary work system S according to the embodiment is used when performing such work on the sewer pipe facility. In this work, one manhole M is set as the starting point manhole M (X), and the other manhole M downstream from the starting point manhole M (X) is set as the end point manhole M (Y). ) And the end point manhole M (Y). There may be one or more manholes M between the start point manhole M (X) and the end point manhole M (Y). In the auxiliary work system S according to the embodiment, the stopcock device 1 according to the embodiment is provided on the downstream opening Gb side of the upstream sewer pipe G (X) connected to the starting point manhole M (X). To control the water flowing into the work section.

  As shown in FIGS. 1 to 5, the water faucet device 1 according to the embodiment is inserted from the opening Gb of the sewer pipe G and expanded in diameter, and is fitted to the opening Gb side while being reduced in diameter. A water stop main body 2 that is released from wearing and a main pipe 3 that passes through the water stop main body 2 and discharges water in the sewer pipe G to the start point manhole M (X) side are provided. The water-stop main body 2 has a ring-shaped core member 4 provided through the main pipe 3, and is fitted to the core member 4 so as to swell and expand its diameter by injecting air into the opening Gb of the sewer pipe G. And a bag body 5 that is reduced in diameter by air exhaust and released from fitting. 3 and 4, reference numeral 6 denotes a nozzle that is provided on the core member 4 and supplies air to the bag body 5. As shown in FIGS. 1 and 2, an air pipe 7 is connected to the nozzle 6, and for example, air is supplied from a compressor 30 described later. Further, the exhaust inside the bag body 5 is also performed through the nozzle 6.

  The main pipe 3 includes a first main pipe 3A on the water stop main body 2 side and a second main pipe 3B that is detachably connected to the first main pipe 3A. The first main pipe 3A and the second main pipe 3B are attached and detached with a known adapter 10 and a cam lever type coupler 11. As shown in FIG. 5, the adapter 10 is formed in a cylindrical shape, and a groove 12 is formed on the outer periphery thereof. The coupler 11 has an insertion hole 13 into which the adapter 10 is inserted, and a pair having a cam portion 13 that is rotated and engaged with the groove 12 of the inserted adapter 10 to lock the adapter 10 in a coupled state. The lever 14 is provided. An adapter 10 is formed on the outlet side of the first main pipe 3A, and a coupler 11 is provided on the inlet side of the second main pipe 3B. As shown in FIG. 9, an extension pipe 8 having the coupler 11 at one end and the adapter 10 at the other end can be connected between the adapter 10 and the coupler 11.

  The second main pipe 3B is bent in an L shape, and is configured to include a straight one portion 15 provided with the adapter 10 and the other portion 16 connected to the one portion 15 at a right angle. On the outlet side of the other portion 16, an outlet pipe 17 connected by the adapter 10 and the coupler 11 similar to the above is provided. An adapter 10 is formed on the outlet side of the outlet pipe 17 and can be connected to a coupler 11 provided at an inlet of a suction pipe 31 described later.

  Further, the outlet side of the main pipe 3, specifically, the connecting part between the one part 15 and the other part 16 of the second main pipe 3 </ b> B, is a sub pipe that is coaxial with the one part 15 and leads water in the sewer pipe G. 18 is provided to be branched. The outer periphery of the outlet 18a of the sub pipe 18 is formed in a so-called bamboo shoot shape so that a later-described outlet pipe 33 is fitted and attached. Since the second main pipe 3B is bent in an L shape, the water stopcock device 1 can be arranged in correspondence with the sewer pipe G and the manhole M arranged at a right angle to each other.

  A main pipe opening / closing valve Va for opening and closing the main pipe 3 is provided on the outlet side of the sub pipe 18 of the main pipe 3 and on the branch point 19 side of the coupler 11. On the other hand, the secondary pipe 18 is provided with a secondary pipe opening / closing valve Vb for opening and closing the secondary pipe 18. The main pipe opening / closing valve Va and the sub pipe opening / closing valve Vb are both manually opened / closed valves operated by levers. By opening / closing the main pipe opening / closing valve Va and the sub pipe opening / closing valve Vb, as shown in FIG. 6, the main pipe 3 is closed—the sub pipe 18 is closed (S1), the main pipe 3 is opened—the sub pipe 18 is closed (S2), and the main pipe 3 is closed— There are four possible settings: secondary pipe 18 open (S3), main pipe 3 open-secondary pipe 18 open (S4). Therefore, since the main pipe 3 can be closed and the sub pipe 18 can be closed (S1), for example, it is possible to cope with the case where it is desired to stop only the sewer pipe G without discharging water.

  In the water faucet device 1 configured as described above, the second main pipe 3B provided with the sub pipe 18 is attached to the first main pipe 3A. Therefore, the through pipe of the conventional existing water faucet apparatus is used as the first main pipe 3A. If so, this existing water faucet device can be easily modified to the water faucet device 1 according to the present embodiment, and therefore versatility can be increased. In addition, since the extension pipe 8 (FIG. 9) can be provided between the first main pipe 3A and the second main pipe 3B, the length of the main pipe 3 can be easily changed. The stopper device 1 can be used, and versatility can also be increased in this respect.

In the work auxiliary system S according to the embodiment, the pump 20 having the suction port 21 and the discharge port 22 and the drive source for driving the pump 20 are installed on the ground. The pump 20 is a diaphragm pump that is operated by compressed air. The drive source is composed of a compressor 30 that is driven by liquid fuel such as light oil and supplies compressed air to the diaphragm pump 20.
As shown in FIG. 7, the diaphragm pump 20 is provided with a first diaphragm 23a and a second diaphragm 23b on both ends of a reciprocating rod 23, respectively, and a compressor 30 on the rod 23 side of the first diaphragm 23a and the second diaphragm 23b. The first air chamber 24a and the second air chamber 24b for inflow and exhaust of the compressed air from the cylinder 23 are provided, respectively, and when the compressed air flows into the first air chamber 24a by the switching valve 24 interlocked with the reciprocating motion of the rod 23. The air drive unit 25 is configured to exhaust the air in the second air chamber 24b, exhaust the air in the first air chamber 24a when the compressed air flows into the second air chamber 24b, and reciprocate the rod 23. Yes.

  Further, the diaphragm pump 20 includes a first liquid chamber 26a and a second liquid chamber 26b that perform suction of water from the suction port 21 and discharge of water from the discharge port 22 outside the first diaphragm 23a and the second diaphragm 23b. The first liquid chamber 26a is enlarged and sucked by the first diaphragm 23a when the rod 23 is moved forward by the switching valves 27a, 27b, 27c, and 27d that are provided in the water suction path and the discharge path, respectively, and interlock with the water pressure. While the water from the port 21 is sucked, the second liquid chamber 26b is reduced by the second diaphragm 23b and water is discharged from the discharge port 22, and when the rod 23 is moved back, the second diaphragm 23b causes the second liquid chamber 26b to return. The first liquid chamber 26a is reduced by the first diaphragm 23a and water is discharged from the discharge port 22 while the water is sucked in from the suction port 21 And it is configured to provide a suction and discharge mechanism 28.

  1 to 4, the outlet of the main pipe 3 of the stop cock device 1 and the suction port 21 of the pump 20 are connected by a suction pipe 31 passing through the opening of the starting point manhole M (X), and the pump 20 A discharge pipe 32 is connected to the discharge port 22, and an outlet end 32 a of the discharge pipe 32 is arranged so that water flows into the sewage pipe G on the downstream side of the end point manhole M (Y).

  Next, the working method of the sewage pipe facility using the auxiliary system S for work will be described. As shown in FIG. 1, in the set work section, for example, when performing inspection, cleaning work, repair, replacement, etc. on the manhole M and the sewer pipe G, first, the start point manhole M ( The water stopper device 1 is inserted from the opening Gb of the upstream sewage pipe G (X) connected to X). Air is supplied to the still water main body 2 to expand the diameter, and is fitted to the opening Gb side. Then, the pump 20 installed on the ground and the outlet of the main pipe 3 are connected by the suction pipe 31 through the starting point manhole M (X). Then, the main pipe opening / closing valve Va is opened, the sub pipe opening / closing valve Vb is closed (set to (S2) in FIG. 6), and the pump 20 is driven. In this case, the water flowing in the upstream sewage pipe G (X) connected to the start point manhole M (X) is sucked by the pump 20 through the suction pipe 31, discharged through the discharge pipe 32, and the end point manhole M It flows into the sewage pipe G (Y) downstream from (Y). Therefore, since water does not flow in the work section, work can be performed without being affected by water.

  Further, in this case, since the pump 20 is constituted by a diaphragm pump 20 that is operated by compressed air, in comparison with conventional gear pumps and vane pumps, inhalation failure is caused by the influence of air mixed in the inhaled water. The situation which arises can be suppressed and a stable driving | operation can be performed now. Therefore, the situation where the pump 20 stops and water overflows upstream can be suppressed. Further, since the diaphragm pump 20 is started, it is not necessary to start the pump 20 by injecting so-called priming water from the pump 20 side to fill the suction pipe 31 with water, and the work becomes complicated. Can be prevented. Furthermore, since the driving source is composed of the compressor 30 driven by liquid fuel, water can be sucked and discharged without using electricity, so that the fear of electric leakage can be eliminated and safety is improved. Can be made.

  Further, in the work such as repair, the work may take several days. In this case, a work interruption period is provided at night. As shown in FIG. 2, at the time of this interruption, the operator stops the pump 20 and connects the outlet pipe 33 to the auxiliary pipe 18 of the water stop cock device 1, for example, and the outlet of the outlet pipe 33. The end 33a is disposed on the downstream opening Gb side of the downstream sewage pipe G through the upstream opening Ga of the downstream sewage pipe G connected to the starting point manhole M (X), or the downstream sewage pipe It arrange | positions further downstream from the downstream opening part Gb of G. In other words, the outlet end 33a of the outlet pipe 33 is disposed downstream of the portion related to the work through the sewage pipe G downstream of the starting point manhole M (X). In FIG. 2, the example arrange | positioned in the downstream opening part Gb vicinity of the downstream sewer pipe G is shown.

  In this state, the main pipe opening / closing valve Va is held open, the sub pipe opening / closing valve Vb of the sub pipe 18 is opened (set in (S4) in FIG. 6), or the main pipe opening / closing valve Va is closed and the sub pipe 18 is closed. Is opened (set to (S3) in FIG. 6). Thereby, as shown in FIG. 2, the water of the sewer pipe G which provided the water stop cock apparatus 1 comes to flow downstream rather than the site | part which concerns on an operation | work. For this reason, even if the pump 20 is stopped, the water in the sewage pipe G provided with the water stop cock device 1 can flow downstream without affecting the work site. Therefore, compared to the case where the pump 20 is always operated, there is no problem of noise, and there is no situation where water overflows due to the failure of the pump 20, and the operation can be safely interrupted. .

And since this interruption work is the operation of opening the sub pipe opening / closing valve Vb of the sub pipe 18, the water is not spouted from the water stopcock device 1 as in the prior art and is not sprinkled on the worker. Is extremely easy to do, and workability is improved.
When the operation is resumed, the sub pipe opening / closing valve Vb of the sub pipe 18 is closed, the outlet pipe 33 is removed, and then the pump 20 is driven. Also in this case, since the operation of closing the sub pipe opening / closing valve Vb of the sub pipe 18 is performed, water is not spouted from the water stop cock device 1 and is not sprinkled on the worker as in the prior art. It becomes easy and workability | operativity is improved.

  When work such as repair is completed, the pump 20 is stopped and the water stop cock device 1 is removed. In this case, first, the outlet pipe 33 is connected to the auxiliary pipe 18 of the water faucet device 1, and the outlet end 33a of the outlet pipe 33 is arranged in the sewage pipe G on the downstream side of the starting point manhole M (X). Alternatively, depending on the conditions, the sub pipe opening / closing valve Vb of the sub pipe 18 is opened without connecting the outlet pipe 33. Thereby, the water of the sewer pipe G provided with the water stop cock device 1 can be made to flow downstream, and the water level can be lowered. Next, the water stop main body 2 of the water stop cock device 1 is reduced in diameter to release the fitting on the opening Gb side, and the water stop cock device 1 is removed from the sewer pipe G. In this case, since the water faucet device 1 is removed after the water level of the sewer pipe G is lowered, the accumulated upstream water does not flow to the downstream side at the same time, thereby ensuring the safety of workers. Further, since the sub pipe opening / closing valve Vb of the sub pipe 18 is opened to lower the water level of the sewage pipe G, water is not spouted from the water stop cock device 1 and is not sprinkled on the worker as in the prior art. Work becomes extremely easy and workability is improved.

FIG. 8 shows an auxiliary work system S in a sewage pipe facility in which a plurality of upstream sewage pipes G (X) are connected to the start point manhole M (X). This is provided with a stopcock device 1 on the downstream opening Gb side of each of the plurality of sewer pipes G, and any one of the stopcock devices 1 is connected to the main stopcock. The device 1 (A) and the other are configured as the sub water-stop device 1 (B), the main pipe 3 of the main water-stop device 1 (A) and the pump 20 are connected, and the main water-stop device 1 (A ) Is provided with a connecting pipe 40 for connecting the outlet of the main pipe 3 of the sub faucet device 1 (B) to the outlet side of the main pipe 3, and a plurality of upstream sewage pipes G ( X) water can be discharged by one pump 20.
The connecting pipe 40 is composed of a three-way pipe 41 in place of the outlet pipe 17 and a connecting pipe 42 that connects one port of the three-way pipe 41 and the outlet of the main pipe 3 of the sub water-stop device 1 (B). Yes. Each connection is made by an adapter 10 and a coupler 11 similar to the above.

  As a result, when the pump 20 is driven, the sub pipe opening / closing valves Vb of the sub pipes 18 of the main water faucet device 1 (A) and the sub water faucet device 1 (B) are closed, respectively. A) and the main pipe opening / closing valve Va of the sub faucet device 1 (B) are opened, the pump 20 sucks water in the sewage pipe G (X) upstream from the start point manhole M (X), and the end point manhole. Water is caused to flow through the sewage pipe G downstream of M (Y). In this case, a plurality of upstream sewage pipes G (X) are connected to the starting point manhole M (X), and even if a plurality of stop cock devices 1 are used, Since discharging can be performed, the system can be simplified and labor saving can be achieved.

  Further, when the pump 20 is stopped, for example, the outlet pipe 33 is connected to the outlet of the sub pipe 18 of the main water faucet device 1 (A), and the outlet end of the outlet pipe 33 is connected to the starting point manhole M (X). It arrange | positions in the downstream opening part Gb side of this downstream sewage pipe G through the upstream opening part Ga of the downstream sewage pipe G, or is further downstream beyond the downstream opening part Gb of the downstream sewage pipe G. The sub pipe opening / closing valve Vb of the sub pipe 18 of the main water plug apparatus 1 (A) is closed while the sub pipe opening / closing valve Vb of the sub pipe 18 of the sub water stopper apparatus 1 (B) is closed. The water in the plurality of upstream sewage pipes G (X) connected to the start point manhole M (X) is collected in the sub-pipe 18 of the main stop cock device 1 (A), and the end point manhole M (Y) Water is caused to flow through the sewage pipe G further downstream. Therefore, the system can be simplified and the water discharge efficiency can be improved. Other actions and effects are the same as described above.

  FIG. 9 shows an auxiliary work system S in the sewage pipe facility in which the upstream sewage pipe G (X) is connected to the middle of the starting point manhole M (X). The sewer pipe G (X) has a branch pipe Gc having an inlet on the opening Gb side and having an outlet at the lower end of the starting point manhole M (X). In this system, the water faucet device 1 is not provided with the main pipe opening / closing valve Va unlike the above. An extension pipe 8 is provided between the first main pipe 3A and the second main pipe 3B. The extension pipe 8 has a coupler 11 at one end and an adapter 10 at the other end, and is connected to the first main pipe 3A and the second main pipe 3B. And the water stop cock device 1 is installed in the back rather than the entrance of branch pipe Gc of sewer pipe G. In this case, since the length of the main pipe 3 can be easily changed by the extension pipe 8, the water faucet device 1 can be used according to installation conditions, and versatility can be increased. In this example, the main pipe opening / closing valve Va is not provided, but the same operations and effects as described above are achieved.

  In the above embodiment, the main pipe 3 and the suction pipe are connected using the adapter 10 and the coupler 11. However, the present invention is not necessarily limited to this. For example, a male screw and a female screw are used. The connection may be changed as appropriate. Further, in the above embodiment, the main pipe opening / closing valve Va does not have to be provided as in the example shown in FIG. 9, but it is preferable to provide the main pipe opening / closing valve Va, for example, without draining the water. This is desirable because it increases versatility, such as being able to handle only water.

S Sewage pipe work auxiliary system M Manhole M (X) Start point manhole M (Y) End point manhole G Sewer pipe G (X) Upstream sewage pipe G (Y) connected to the start point manhole Connected to the end point manhole Downstream sewer pipe Ga Upstream opening Gb Downstream opening Gc Branch pipe 1 Water stop device 2 Main body 3 Main pipe 3A First main pipe 3B Second main pipe 5 Bag body 6 Nozzle 7 Air pipe 8 Extension pipe 10 Adapter 11 Coupler 15 One part 16 Other part 17 Outlet pipe 18 Sub pipe Va Main pipe on / off valve Vb Sub pipe on / off valve 20 Diaphragm pump 21 Suction port 22 Outlet 30 Compressor (drive source)
31 suction pipe 32 discharge pipe 33 outlet pipe 40 connecting pipe 41 three-way pipe 42 connecting pipe

Claims (10)

It is provided in a sewer pipe having an opening opening in a manhole and into which water flows, and is inserted through the opening of the sewage pipe to expand the diameter and fit into the sewer pipe, and the diameter is reduced and the fitting is released. In a water faucet device for a sewage pipe comprising a water main body and a main pipe that passes through the water stop main body and discharges water in the sewage pipe to the manhole side,
A sub pipe is provided on the outlet side of the main pipe and is branched from the main pipe for deriving water in the sewer pipe, and a sub pipe opening / closing valve for opening and closing the sub pipe is provided in the sub pipe. Stopper device for drain pipes.   The sewage stop valve device for a sewage pipe according to claim 1, further comprising a main pipe opening / closing valve that opens and closes the main pipe on an outlet side of a branch point of the sub pipe of the main pipe.   The main pipe comprises a first main pipe on the water stop main body side and a second main pipe detachably connected to the first main pipe, and the sub pipe is provided on the second main pipe. A water stop device for a sewage pipe according to claim 1 or 2. A plurality of manholes provided at a required interval and an upstream opening that opens to an upstream manhole and a downstream opening that opens to a downstream manhole are connected between adjacent manholes, and water flows. When manipulating a sewerage facility equipped with a sewer pipe, one manhole is set as the start point manhole, and the other manhole downstream from the start point manhole is set as the end point manhole. Work of the sewer pipe facility that controls the water flowing into the work section by providing a stop cock on the downstream opening side of the upstream sewer pipe connected to the start point manhole In the auxiliary system for
The water stop device is inserted through the opening of the sewer pipe and expanded in diameter and fitted to the opening, and the water stop main body whose diameter is reduced and the fitting is released, and the water stop main body is penetrated. A main pipe for discharging the water in the sewage pipe to the starting manhole side, and a sub pipe branched from the main pipe on the outlet side of the main pipe for deriving the water in the sewage pipe. A pipe is provided with a secondary pipe opening / closing valve that opens and closes the secondary pipe,
A pump having a suction port and a discharge port and a drive source for driving the pump are installed on the ground, and the outlet of the main pipe of the water stop device and the suction port of the pump are connected by a suction pipe passing through the opening of the start point manhole. Connecting a discharge pipe to the discharge port of the pump, and arranging the outlet end of the discharge pipe so that water flows to the drain downstream of the end point manhole. Auxiliary system.   5. The auxiliary work for a sewage pipe facility according to claim 4, wherein a main pipe opening / closing valve for opening and closing the main pipe is provided on an outlet side of a branch point of the sub pipe of the main pipe. system.   The main pipe comprises a first main pipe on the water stop main body side and a second main pipe detachably connected to the first main pipe, and the sub pipe is provided on the second main pipe. An auxiliary system for work in a sewage pipe facility according to claim 4 or 5.   7. The pump according to claim 4, wherein the pump is constituted by a diaphragm pump operated by compressed air, and the drive source is constituted by a compressor which is driven by liquid fuel and supplies compressed air to the diaphragm pump. An auxiliary system for work in sewage pipe facilities. An auxiliary system for work of a sewer pipe facility in which a plurality of upstream sewer pipes are connected to the start point manhole,
The stop cock device is provided on the downstream opening side of each of the plurality of sewer pipes, and any one of the stop cock devices is used as a main stop cock device, and the other It is configured as a sub faucet device, connects the main pipe of the main water faucet device and the pump, and connects the outlet of the main pipe of the sub water faucet device to the outlet side of the main water faucet device. 8. A connecting pipe is provided, and a plurality of upstream sewage pipes connected to the starting point manhole can be discharged with a single pump. Auxiliary work system for sewerage facilities. In the working method of the sewer pipe facility which performs the work of the sewer pipe facility using the auxiliary work system for the sewer pipe facility according to any one of claims 4 to 7,
When the pump is driven, the secondary pipe opening / closing valve of the secondary pipe of the water stop cock device is closed, the main pipe of the water stop cock device is opened, and water in the drain pipe upstream of the starting point manhole is sucked by the pump. , Pour water into the sewage pipe downstream from the end point manhole,
When the pump is stopped, the outlet pipe is connected to the outlet of the sub pipe, and the outlet end of the outlet pipe is connected to the starting point manhole through the upstream opening of the downstream sewer pipe. Arranged on the downstream opening side, or further downstream beyond the downstream opening of the downstream sewage pipe, opening the secondary pipe opening / closing valve of the secondary pipe, and downstream of the end point manhole Working method of a sewer pipe facility characterized by flowing water into the sewer pipe on the side. In the work method of the sewer pipe facility which performs the work of the sewer pipe facility using the work auxiliary system for the sewer pipe facility according to claim 8,
When the pump is driven, the sub pipe open / close valves of the sub pipes of the main water stop device and the sub water stop device are closed, and the main pipes of the main water stop device and the sub water stop device are opened. Inhales the water in the sewage pipe upstream from the start point manhole, and flows the water into the sewage pipe downstream from the end point manhole.
When the pump is stopped, the outlet pipe is connected to the outlet of the sub pipe of the main water faucet device, and the outlet end of the outlet pipe passes through the upstream side opening of the downstream sewer pipe connected to the starting point manhole. It is arranged on the downstream opening side of the downstream sewage pipe, or is further arranged on the downstream side beyond the downstream opening of the downstream sewage pipe. With the open / close valve closed, the secondary pipe open / close valve of the secondary pipe of the main water stop cock device is opened, and the water in the plurality of upstream sewer pipes connected to the start point manhole is supplied to A method of working a sewer pipe facility, characterized in that water is poured into a sewer pipe downstream of the end point manhole after being concentrated in a pipe.

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